._flex{
    display: flex;
    align-items: center;
}
._flex-center{
    display: flex;
    align-items: center;
    justify-content: center;
}
._flex-col{
    flex-direction: column;
}
._flex-row{
    flex-direction: row;
}
._flex-sb{
    justify-content: space-between;
}

